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- Energy storage hydraulic control system with reliable energy monitoring
- Energy storage high-flow hydraulic forming system
- High-precision digital servo synchronous actuation system
- Energy storage high-flow electro-hydraulic servo test system
- Energy storage, large flow compensation and balance hydraulic control system
- High-frequency fatigue testing system
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- Product
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Solution
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Energy storage hydraulic control system with reliable energy monitoring
- Energy storage high-flow power source start-up system
- Energy-saving electro-hydraulic control system
- Hydro-controlled system of electric furnace energy storage device power source
- Emergency control high-pressure accumulator power source for valves
- Governor energy storage power source electro-hydraulic control system
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Energy storage high-flow hydraulic forming system
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High-precision digital servo synchronous actuation system
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Energy storage high-flow electro-hydraulic servo test system
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Energy storage, large flow compensation and balance hydraulic control system
- High-frequency fatigue testing system
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Energy storage hydraulic control system with reliable energy monitoring
- Service
- Calculation
Specialized products
Diaphragm for low-permeability diaphragm-type accumulators
The diaphragms supplied by SCHWERLL for welded‑type diaphragm accumulators are low‑permeability diaphragms, manufactured in France. They are long‑term OEM components, with diaphragm capacities ranging from 0.1 L to 4 L.
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Bladder for adhesive‑structured bladder-type accumulators
The bladder of SCHWERLL’s standard‑specification bladder accumulators is manufactured using an adhesive‑bonding process. Following simulation‑based design, the bladders are produced on a dedicated production line, delivering exceptional long‑term durability. The diaphragm exhibits low permeability, providing an ideal solution for high‑end applications.
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When operating conditions demand that the hydraulic flow characteristics supplied by the power source exhibit ultra‑high speeds and require local control, conventional hydraulic systems can no longer meet the requirements of on‑site high‑speed control. The solution is to shorten the fluid‑transmission system’s pipeline length and increase the control pressure to achieve a higher energy‑density output. Under such conditions, a pneumatic‑hydraulic intensifier provides an excellent solution.
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In a closed-loop hydraulic system, the return oil tank, being sealed and integrated into the system circuit, experiences pressure fluctuations due to entrained air. Therefore, the tank must be equipped with a buffer to ensure stable operation of the entire closed system.
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High-Frequency-Response Servo Valve Damper
When the system requires stable flow regulation for a liquid—such as cooling water—a stainless steel cooling‑water pressure regulator must be installed in the piping. This regulator stabilizes the system’s water pressure, thereby delivering cooling water at a consistent pressure to the load side.
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Gas–liquid piston-type shock absorber
The SCHWERLL gas‑liquid piston‑type shock absorber is a high‑precision damping device. Compared with spring‑based dampers, it offers superior repeatability and smoother vibration suppression, and when installed in vehicle seats or speedboat seating, it can effectively enhance driver comfort.
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Wave-compensated three-chamber cylinder
Unlike conventional double‑acting cylinders that have only two chambers—the rodless chamber and the rod side—three‑chamber cylinders, through a hollow piston rod, an internal core column, or a composite piston design, incorporate an additional third chamber (commonly the piston rod’s internal cavity, an auxiliary balance chamber, or an acceleration chamber). These three chambers can be supplied with fluid independently or in combination, enabling sophisticated motion control.
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Traditional flow‑synchronization systems, such as those used for penstock gate valves in hydropower stations, typically require six sets of synchronizing servomotors. These systems rely on either synchronous motors or mechanical linkages—often employing a mechanical lead‑screw drive to achieve synchronization—but they suffer from issues like reduced accuracy due to wear and tear, as well as potential lead‑screw breakage caused by air pockets in the mechanical transmission. In contrast, the SCHWERLL hydraulic servo digital control system achieves digital synchronization via a hydraulic servo control loop and employs a multi‑channel hard‑sync cylinder design driven by piston accumulators equipped with energy‑monitoring capabilities. This enables emergency shutdown functionality under fault conditions, ensuring long‑term repeatability of synchronization accuracy and high‑precision hard synchronization even during complete power loss. Meeting the stringent requirements of applications such as penstock gate valves—where high precision, excellent repeatability, and reliable emergency synchronization under total power‑outage conditions are critical—the SCHWERLL system represents the optimal synchronization solution.
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When aluminum alloys, aluminum–magnesium alloys, magnesium alloys, and other metals are formed by die‑casting, it is necessary to account for the forming process, including rapid injection control (for shaping) and pressure‑holding control (for fine solidification). The forming process typically employs a piston‑accumulator system as the power source and is driven by a hydraulic servo‑controlled rapid‑forming system. As the actuating element, the hydraulic cylinder must achieve a piston‑rod speed of 8–12 m/s, necessitating the use of high‑speed servo‑driven injection cylinders to complete the injection‑forming operation. Key characteristics of these injection cylinders include:
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The application of hydraulic balance cylinders in industrial robots and lifting platforms. The role of the closed system is to counteract the axial load torque, because the axial drive is not statically overloaded, and it can provide the maximum acceleration axial torque. The function of the enclosed gas in the diaphragm accumulator is equivalent to a mechanical spring.
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At its core, the oil‑gas spring is a high‑performance vibration‑damping and load‑bearing solution designed for heavy‑load applications under harsh operating conditions. It integrates the elastic function of a conventional spring with the damping characteristics of a shock absorber, making it ideal for scenarios where standard suspension systems fall short or cannot deliver satisfactory performance.
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Underwater piston or bladder-type hydraulic buffer
SCHWERLL underwater hydraulic accumulators (with separate chambers for the seawater side and the hydraulic oil side) are available in configurations where one end is connected to seawater and the other to hydraulic oil. They may feature either a floating‑piston design (with an isolating piston) or a bladder‑type design (diaphragm‑type). In both cases, the chamber is divided into two independent compartments by a wear‑resistant isolating piston or a flexible bladder.
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Stainless Steel Pressure Compensator
At the outlet of the cooling water circulation system’s pump and other locations, pressure balancing and compensation are required. Canned‑type or diaphragm‑type pressure‑compensation devices are typically employed; due to the nature of the process fluid, these units are usually fabricated from stainless steel and other suitable materials, and are custom‑designed to match the system’s pressure and flow characteristics.
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Closed-Loop Pressurized Fuel Tank
In closed-loop systems, the use of conventional hydraulic reservoirs is constrained by system dynamics and installation space; therefore, pressurized reservoirs must be employed to form a closed hydraulic circuit, thereby reducing the overall equipment footprint.
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Schwerll Fluid Control (Beijing) Co., Ltd.
Email: schwerlltec@schwerll.com.cn
Address: Building 39B, Floor 1, No. 16, Huanke Zhong Road, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing
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